chore(e2e): rhidp-6297 Automate E2E Runner Image Build and Push to Quay via GitHub Actions (#2524)

* Add GitHub workflow to build and push e2e-runner image

This workflow builds the e2e-runner Docker image and pushes it to Quay.io upon pull requests to the main branch.

Signed-off-by: Gustavo Lira <[email protected]>

* Update README with OpenShift CI image workflow details

Clarified the process for updating and deploying the `rhdh-e2e-runner` image, including workflows for `main` and other branches. Highlighted steps for local testing, GitHub Actions automation, and propagation delays in OpenShift CI's mirror

Signed-off-by: Gustavo Lira <[email protected]>

---------

Signed-off-by: Gustavo Lira <[email protected]>

Author: gustavolira

.github/workflows/push-e2e-runner.yaml

@@ -0,0 +1,57 @@
+name: Build & Push e2e-runner Image to Quay.io
+
+on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - '.ibm/images/Dockerfile'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  REGISTRY: quay.io
+  REGISTRY_IMAGE: rhdh-community/rhdh-e2e-runner
+  IMAGE_TAG: main
+
+jobs:
+  build-image:
+    name: Build & Push e2e-runner Image
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-24.04]
+    runs-on: ${{ matrix.os }}
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Prepare Environment Variables
+        run: |
+          echo "PLATFORM=linux/amd64" >> $GITHUB_ENV
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Quay.io
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.QUAY_USERNAME }}
+          password: ${{ secrets.QUAY_TOKEN }}
+
+      - name: Build and Push Image
+        uses: docker/build-push-action@v5
+        with:
+          context: .ibm/images/
+          push: true
+          tags: ${{ env.REGISTRY }}/${{ env.REGISTRY_IMAGE }}:${{ env.IMAGE_TAG }}
+          platforms: ${{ env.PLATFORM }}

.ibm/images/README

@@ -1,23 +1,38 @@
-This Dockerfile creates an image to be used by the IBM Cloud pipelines
+# RHDH e2e Runner - OpenShift CI Integration
 
-Currently this image is built by hand at intervals and pushed to https://quay.io/repository/rhdh-community/rhdh-e2e-runner?tab=tags when in need of an update.
+## Overview
+The `rhdh-e2e-runner` is a container image used in **OpenShift CI**, where it is deployed via a **mirror** that fetches the image from the Quay repository.
 
-```
-SHA="$(git rev-parse --short=8 HEAD)"
-# main or release-1.y
-branch="$(git rev-parse --abbrev-ref HEAD)" 
-image="quay.io/rhdh-community/rhdh-e2e-runner:${branch}"
+## Workflow for Updating the Image
 
-# build and push
-podman build . -f Dockerfile -t "${image}-${SHA}" && podman push "${image}-${SHA}"
+### **Main Branch Workflow**
+For changes to the image in `.ibm/images/Dockerfile`, follow these steps:
+1. **Perform a Local Test:**
+   - Before updating the `Dockerfile`, perform a local test by running the e2e tests to ensure the changes are stable.
 
-# update the floating (branch-named) tag too
-skopeo --insecure-policy copy --all docker://${image}-${SHA} docker://${image} 
-```
+2. **Update the Dockerfile:**
+   - Once validated, update `.ibm/images/Dockerfile` with the required changes.
 
-In future this might be automated so that if the contents of this folder changes, a new image is pushed automatically.
+3. **GitHub Actions Build & Push:**
+   - The **GitHub Actions workflow** automatically builds and pushes the updated image to **Quay.io**.
+   - This only happens **after all tests are completed successfully**.
 
-See also:
+4. **Propagation to OpenShift CI Mirror:**
+   - After the image is pushed to Quay, OpenShift CI **does not** immediately use the new image.
+   - There is a delay while OpenShift updates its **mirror** with the new version.
 
-* https://quay.io/repository/rhdh-community/rhdh-e2e-runner?tab=info
-* https://issues.redhat.com/browse/RHIDP-6244
+5. **Merge to Main Branch:**
+   - The image update process happens **before merging into `main`**.
+   - Ensure that the updated image has been successfully used in e2e tests before merging.
+
+### **Other Branches Workflow**
+For branches **other than `main`**, OpenShift CI does **not** fetch from Quay:
+- Instead, **OpenShift CI builds the image directly** from `.ibm/images/Dockerfile`.
+- Any changes made to the file will **immediately reflect** in the test execution.
+- There is no need to wait for an image update in the mirror.
+
+## Key Considerations
+- **Local testing is mandatory** before making any modifications.
+- **GitHub Actions automates the push process** only for `main` branch updates.
+- **OpenShift CI mirror has a delay** in updating the image after it is pushed to Quay.
+- **Other branches build the image directly**, so changes take effect immediately.